Has anybody used anything like Slick50 in the Impreza gearbox? Is there any reason why I shouldn't? I've used it in other cars and liked it.

The gearchange has got more notchy when cold since the dealer changed the oil for "Legacy" oil (it has done 90k).

Any thoughts?

Regards

Francis K

 

Got extralube ZX1 in my WRX engine and gearbox. Cant say iv noticed much differance. Wouldn`t have thought it would do any harm though.

 

I put the slick 50 product in my 03 WRX and sidn't notice any difference in the gear change whatsoever.
I wouldn't use it again, probably spend the money on a higher spec tran oil/more frequent changes.

 

Try Castrol Syntrax or Redline Shock proof.. both gearbox oil.. don't believe in all there adaptives, if they worked so well why are they not used from day one etc..

Not good to put stuff like this in the engine due to the turbo heat.. gearbox heat might not be a problem but not sure..

JGM

 

Gearbox synchros live and work on friction, if you put in a friction reducer........................................... ...... you figure it out.

Synthetic gear oils such as mentioned above are very good and will actually 'repair' a dodgy synchro - I've proved it in a Skyline I had.

David API